Effect of Functionalized Carbon Nanotubes in the Detection of Benzene at Room Temperature

Abstract

In this paper, carbon nanotubes (CNTs) were functionalized by acid treatment and further functionalized with dodecylamine and were designated as CNT-carboxylic and CNT-amide, respectively. Then, functionalized CNTs produced were characterized with various methods to verify the attachment of a functional group. Performance of the functionalized CNTs in the detection of benzene gas was monitored at room temperature. The sample was dropped cast on the interdigitated transducer (IDT), and the changes in resistivity were recorded by a digital multimeter in a customized chamber under controlled humidity (∼55%) environment. Based on the findings, it showed that the functionalized CNTs provide an extra active area for interaction between the gas analyte and CNTs, thus increasing their response and improving the sensitivity of the sensing material.

Fabrication, Functionalization, and Application of Carbon Nanotube-Reinforced Polymer Composite: An Overview

“…All these superiorities allow CNTs to have tremendous potential for nanotechnology fields, especially for use as composite fillers and reinforcements in order to enhance the mechanical, electrical, and thermal properties of resulting composite systems. Many potential applications for CNTs, including microwave absorption [ 8 , 9 ], corrosion protection [ 10 , 11 ], reinforced materials in natural fiber composites [ 12 , 13 ], electromagnetic interference shielding (EMI) [ 14 , 15 ], batteries [ 16 , 17 ], solar cells [ 18 , 19 , 20 , 21 ], chemical sensors [ 22 , 23 , 24 ], hydrogen storage [ 25 , 26 ], field-emission materials [ 27 , 28 ], and adsorbents [ 29 , 30 ], have been reported.…”

Carbon nanotubes: functionalisation and their application in chemical sensors

“…4,5 With these promising strengths, CNTs have tremendous potential for applications in many scientic and technological elds, especially for use as composite llers in polymers to improve the mechanical, thermal, and electrical properties of resulting composites. There have been indications of a number of potential applications for CNTs, including microwave absorption, 6,7 corrosion protection, 8,9 reinforced materials in natural bre composites, 10,11 electromagnetic interference shielding (EMI), 12,13 batteries, 14,15 solar cells, [16][17][18][19] chemical sensor, [20][21][22][23] hydrogen storage, 24,25 and eld-emission materials. 26,27 Other than CNTs, had listed other types of carbonaceous materials, such as amorphous porous carbon, graphene, carbon black, carbon nanobre, and graphite.…”

Growth of MWCNTs on Plasma Ion-Bombarded Thin Gold Films and Their Enhancements of Ammonia-Sensing Properties Using Inkjet Printing

“…e evolution of thin Au films to nanoparticles using thermal annealing and plasma ion bombardment was successfully reported for growing the CNTs [13]. For gas-sensing applications, the CNTs can be promoted as a good material due to its excellent properties such as high specific surface area, good electric conductivity, and high carrier mobility [15,16].…”

“…e publications involving the gas-sensing devices have been focused on the high sensitivity and good selectivity at room temperature [16][17][18][19]. e CNTs decorated with some metal nanoparticles as a sensing film were reported to improve the gas-sensing properties [20][21][22][23].…”